Japan Tsunami Alerts: Understanding the Warning System (Simple Guide)

Japan earthquake triggers tsunami warning

Japan earthquake: Expert says severe tsunami now unlikely

Earthquake jolts eastern Japan, no tsunami warning - NHK

Powerful Earthquake Hits Japan, Causing Tsunami and Large Fire

Six dead, thousands in shelters as quakes rock Japan

Operations have been hampered in Japan to find survivors because the quake hit in a relatively remote place and many roads were blocked by falling rocks.

Powerful earthquakes leave at least 8 dead, destroy buildings along Japan's western coast